[INFO] cloning repository https://github.com/jackyzhen/rust-vs-go-slides
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jackyzhen/rust-vs-go-slides" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackyzhen%2Frust-vs-go-slides", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackyzhen%2Frust-vs-go-slides'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aab94ec37548c57d445ea7438359d3f1e66f0988
[INFO] testing jackyzhen/rust-vs-go-slides against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackyzhen%2Frust-vs-go-slides" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackyzhen/rust-vs-go-slides on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jackyzhen/rust-vs-go-slides
[INFO] finished tweaking git repo https://github.com/jackyzhen/rust-vs-go-slides
[INFO] tweaked toml for git repo https://github.com/jackyzhen/rust-vs-go-slides written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/jackyzhen/rust-vs-go-slides already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d1f4925ebbd0feb0cf76e99eec72b3f77ec01ee1783775d1ef445793d1b787e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9d1f4925ebbd0feb0cf76e99eec72b3f77ec01ee1783775d1ef445793d1b787e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d1f4925ebbd0feb0cf76e99eec72b3f77ec01ee1783775d1ef445793d1b787e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d1f4925ebbd0feb0cf76e99eec72b3f77ec01ee1783775d1ef445793d1b787e", kill_on_drop: false }`
[INFO] [stdout] 9d1f4925ebbd0feb0cf76e99eec72b3f77ec01ee1783775d1ef445793d1b787e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d29c12342fb8b4e89986e85dc05a728c555400d9e0f8e55a251f4a0b3ac70641
[INFO] running `Command { std: "docker" "start" "-a" "d29c12342fb8b4e89986e85dc05a728c555400d9e0f8e55a251f4a0b3ac70641", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling stdweb v0.4.8
[INFO] [stderr]    Compiling discard v1.0.3
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling getopts v0.2.18
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling serde_json v1.0.24
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]    Compiling http v0.1.8
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling stdweb-derive v0.4.0
[INFO] [stderr]    Compiling yew v0.5.0 (https://github.com/DenisKolodin/yew?rev=b957f8778ebb3ce88a6d10dfb41f04a4e44d6640#b957f877)
[INFO] [stderr]    Compiling rust-vs-go-slides v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub handler: Option<Box<Task>>,
[INFO] [stdout]    |                             ^^^^ help: use `dyn`: `dyn Task`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a" "/opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.4l5bu753ff8v80x5.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-af3dffdcf44ca20d/out" "-L" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib" "/opt/rustwide/target/debug/deps/libpulldown_cmark-95d494d528670f2f.rlib" "/opt/rustwide/target/debug/deps/libbitflags-349f312ea2cff189.rlib" "/opt/rustwide/target/debug/deps/libyew-946ef0313280235a.rlib" "/opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib" "/opt/rustwide/target/debug/deps/libdiscard-c993114efd4bb4a3.rlib" "/opt/rustwide/target/debug/deps/libslab-bde1a12ed1054689.rlib" "/opt/rustwide/target/debug/deps/libanymap-7e5e2b7286b2930b.rlib" "/opt/rustwide/target/debug/deps/libbincode-fc67fa9361ebd13a.rlib" "/opt/rustwide/target/debug/deps/libserde_json-decebc9141451dee.rlib" "/opt/rustwide/target/debug/deps/libdtoa-e671f265880199ab.rlib" "/opt/rustwide/target/debug/deps/libserde-4c5558aedaf66292.rlib" "/opt/rustwide/target/debug/deps/libhttp-9fdb6883e8b5cf5e.rlib" "/opt/rustwide/target/debug/deps/libitoa-55737232f3913760.rlib" "/opt/rustwide/target/debug/deps/libfnv-536a1824ffde2141.rlib" "/opt/rustwide/target/debug/deps/libbytes-473fd5e8a0cfc61d.rlib" "/opt/rustwide/target/debug/deps/libiovec-28d0c0f1b6527f01.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-27d4dffabb8bf830.rlib" "/opt/rustwide/target/debug/deps/liblog-d96ab6655aa715db.rlib" "/opt/rustwide/target/debug/deps/libfailure-ef99fe9e896974b1.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-c3a833beeee9ebe6.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-6f5d1dcb1b8ed14a.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-dc4c4f12469b5ed3.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-ca68414a82a3ee0a.rlib" "/opt/rustwide/target/debug/deps/liblibc-4f620a0af78a88ba.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-21256c14e4504640.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-986e7fea4474d4d2.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-91d85f45babdb06e.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-756509c31813f9a6.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-5c2ef587e740c0cc.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-ad8f9371d31db1b3.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-402820fb3b4d3dd8.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-5e8e903f07dc8747.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7ab9ae5080c07187.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-c8e8d47c6bf14de2.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5a02dbb58abd015a.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-cedc8fec61444895.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1c96351c52bc56a.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e41c6d24baeb2249.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-62493b241881590c.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a1fd7734706d5518.rlib" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-1eec8756baa5bc24.rlib" "-Wl,-Bdynamic" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/rust_vs_go_slides-e5dd8456a51d9e2a.rust_vs_go_slides.5srlr9lo-cgu.3.rcgu.o: in function `stdweb::webapi::parent_node::IParentNode::query_selector':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/parent_node.rs:23: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib(rust_vs_go_slides-0e3b8471e7df76fa.rust_vs_go_slides.7z2nkrkp-cgu.11.rcgu.o): in function `<stdweb::webapi::html_elements::textarea::TextAreaElement as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/html_elements/textarea.rs:12: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib(rust_vs_go_slides-0e3b8471e7df76fa.rust_vs_go_slides.7z2nkrkp-cgu.11.rcgu.o): in function `stdweb::webapi::html_elements::textarea::TextAreaElement::set_value':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/html_elements/textarea.rs:36: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib(rust_vs_go_slides-0e3b8471e7df76fa.rust_vs_go_slides.7z2nkrkp-cgu.3.rcgu.o): in function `<stdweb::webapi::events::mouse::ClickEvent as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/events/mouse.rs:259: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib(rust_vs_go_slides-0e3b8471e7df76fa.rust_vs_go_slides.7z2nkrkp-cgu.3.rcgu.o): in function `<stdweb::webapi::html_elements::input::InputElement as stdweb::webcore::instance_of::InstanceOf>::instance_of':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/html_elements/input.rs:13: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/librust_vs_go_slides-0e3b8471e7df76fa.rlib(rust_vs_go_slides-0e3b8471e7df76fa.rust_vs_go_slides.7z2nkrkp-cgu.3.rcgu.o):/opt/rustwide/cargo-home/git/checkouts/yew-cffb4df3674cc4fb/b957f87/src/virtual_dom/vtag.rs:288: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.6.rcgu.o): in function `stdweb::webcore::ffi::emscripten::event_loop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_pause_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webcore/ffi/emscripten.rs:11: undefined reference to `emscripten_set_main_loop'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.6.rcgu.o): in function `stdweb::webapi::token_list::TokenList::add':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/token_list.rs:27: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.6.rcgu.o): in function `stdweb::webapi::token_list::TokenList::remove':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/token_list.rs:39: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.8.rcgu.o): in function `stdweb::webapi::event_target::EventListenerHandle::remove':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webapi/event_target.rs:29: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.9.rcgu.o): in function `stdweb::webcore::initialization::initialize':
[INFO] [stdout]           /opt/rustwide/target/debug/build/stdweb-05d8183d33875226/out/runtime.rs:1: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.9.rcgu.o): in function `stdweb::webcore::initialization::initialize::{{closure}}':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webcore/initialization.rs:24: undefined reference to `emscripten_asm_const_int'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libstdweb-989d2ed31c5deddc.rlib(stdweb-989d2ed31c5deddc.stdweb.1xalpkfg-cgu.9.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stdweb-0.4.8/src/webcore/initialization.rs:26: more undefined references to `emscripten_asm_const_int' follow
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-vs-go-slides`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d29c12342fb8b4e89986e85dc05a728c555400d9e0f8e55a251f4a0b3ac70641", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d29c12342fb8b4e89986e85dc05a728c555400d9e0f8e55a251f4a0b3ac70641", kill_on_drop: false }`
[INFO] [stdout] d29c12342fb8b4e89986e85dc05a728c555400d9e0f8e55a251f4a0b3ac70641